Getting Started with the DS1840K . . .
4 of 13
Jumper blocks J4 and J5 are multi-purpose in that they give you the ability to use a ribbon cable to interface
the pots to your own circuitry, whether it be in the proto area or elsewhere.
The DS1840K Demo Board also contains an oscillator/buzzer
circuit which uses the potentiometers to vary the frequency of a tone
(see figure 5). The purpose of the buzzer is to allow you to hear the
changes in resistance (in case you do not have a multi-meter handy).
This circuit is enabled/disabled by DIP switch 5, labeled “555 ON”.
To configure the circuit to work with the DS1845, set the three
jumpers on JP1 and JP2 as shown in Figure 6 (all three jumpers in
the down position). Also, be sure to remove any jumpers on J4 and
J5.
Figure 5. Oscillator circuit.
Figure 6. Jumper settings.
Once you have configured the jumpers and DIP switches to suit your application, you are ready to run the
DS1840K Demo Software. Skip over to
Using the DS1840K Software
.
JP2
JP1
L1
H0
W1
CNTRL
555 Vcc
W0
H1
DIS
L1
